humprey prior of windsor, hartford co., ct

I can trace back to Humprey Prior(1643-1719) from Windsor,Ct. but have hit a wall with his father and how he came to be born in Conn. Can anyone give me a clue about his predecessors? There seems to be conflicting trees on ancestry.com that list his father as a.) Thomas from England and b.) Daniel from Duxbury,MA. Anyone have the real facts? Thanks for any help you can give me.